Exam 23: Species and Their Formation

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Which of the following is the correct ranking with respect to number of species (from highest to lowest) of plants pollinated by wind (Wind), plants pollinated by animals that are generalist pollinators (Generalist), and plants pollinated by animals that are specialist pollinators (Specialist)?

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Alloploidy

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Sympatric speciation

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The Swedish biologist _______ developed the binominal classification system of nomenclature and classified organisms based on a(n) _______ species concept.

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A long, narrow hybrid zone exists in Europe between the ranges of the fire-bellied toad and the yellow-bellied toad. The persistence of this zone can be attributed to which of the following factors?

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The most common means of sympatric speciation occurs via

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Evolutionary radiation

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Which of the following does the Dobzhansky-Muller model of speciation necessarily require?

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Which of the following statements about the Hawaiian Islands is true?

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Exhibiting great morphological and ecological diversity, the 28 species of Hawaiian sunflowers, known as _______, are a prime example of an adaptive radiation.

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Which of the following would likely lead to an increase in speciation rates?

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Which statement about speciation is not true?

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For which of the following reasons would we expect rapid speciation to occur among animals with complex sexually-selected behavior patterns?

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Which of the following statements about adaptive radiations is true?

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The evolution of chromosomal rearrangements in Rhogeessa bats supports the role of _______ in speciation.

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More than 90 percent of the plant species on the Hawaiian Islands exist in no other region of the world; therefore, they are said to be _______ to Hawaii.

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Which of the following statements about hybrid zones is true?

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Which of the following statements about speciation is true?

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Which of the following is not a potential prezygotic reproductive barrier?

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Which of the following statements best explains why the silverswords underwent an adaptive radiation and the tarweeds did not?

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